Suggest Treatment For Tiredness, Nausea, Low Grade Fever And Shortness Of Breath

I have been sick almost a month. I have a good day here and there but just don t feel well. I started off with what I thought was the flu the first week of February. I am still tired, nauseous, eating bland foods, running low grade fever on and off, and get out of breathe doing regular things(walking up stairs and doing laundry). I was able to get a doctors appointment on March 9th- should I go to a walk in clinic before then. I really want to see my doctor but I am sick of being nauseous all the time.